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91 lines
2.1 KiB
Markdown
91 lines
2.1 KiB
Markdown
6 years ago
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# mime
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Comprehensive MIME type mapping API based on mime-db module.
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## Install
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Install with [npm](http://github.com/isaacs/npm):
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npm install mime
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## Contributing / Testing
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npm run test
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## Command Line
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mime [path_string]
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E.g.
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> mime scripts/jquery.js
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application/javascript
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## API - Queries
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### mime.lookup(path)
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Get the mime type associated with a file, if no mime type is found `application/octet-stream` is returned. Performs a case-insensitive lookup using the extension in `path` (the substring after the last '/' or '.'). E.g.
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```js
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var mime = require('mime');
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mime.lookup('/path/to/file.txt'); // => 'text/plain'
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mime.lookup('file.txt'); // => 'text/plain'
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mime.lookup('.TXT'); // => 'text/plain'
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mime.lookup('htm'); // => 'text/html'
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```
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### mime.default_type
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Sets the mime type returned when `mime.lookup` fails to find the extension searched for. (Default is `application/octet-stream`.)
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### mime.extension(type)
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Get the default extension for `type`
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```js
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mime.extension('text/html'); // => 'html'
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mime.extension('application/octet-stream'); // => 'bin'
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```
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### mime.charsets.lookup()
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Map mime-type to charset
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```js
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mime.charsets.lookup('text/plain'); // => 'UTF-8'
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```
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(The logic for charset lookups is pretty rudimentary. Feel free to suggest improvements.)
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## API - Defining Custom Types
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Custom type mappings can be added on a per-project basis via the following APIs.
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### mime.define()
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Add custom mime/extension mappings
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```js
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mime.define({
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'text/x-some-format': ['x-sf', 'x-sft', 'x-sfml'],
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'application/x-my-type': ['x-mt', 'x-mtt'],
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// etc ...
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});
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mime.lookup('x-sft'); // => 'text/x-some-format'
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```
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The first entry in the extensions array is returned by `mime.extension()`. E.g.
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```js
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mime.extension('text/x-some-format'); // => 'x-sf'
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```
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### mime.load(filepath)
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Load mappings from an Apache ".types" format file
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```js
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mime.load('./my_project.types');
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```
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The .types file format is simple - See the `types` dir for examples.
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